The authority suspect they were exposed to a harmful substance, but it's not clear what.

官方怀疑他们接触了有害物质，但是不清楚具体是什么。

That's when your body's immune system can fight off harmful substances to protect your body.

在这时，身体的免疫系统能对抗有害物质来保护身体。

Though necessary, landfills take up valuable space, often stink, and can leak harmful substances into the soil.

虽然很有必要，但是废渣埋填法占据宝贵的地方，常常发出异臭，而且还把有害物质渗漏到土壤中。

Leaching of chemicals and other harmful substances from landfill is liable to increase with sea level rise.

随着海平面上升，从垃圾填埋场中浸出的化学品和其他有害物质可能会增加。

Senator Wicker says Asian-produced seafood has been found to have higher levels of chemicals and other harmful substances.

参议员威克表示，人们发现亚洲生产的海产品含有较高水平的化学物质和其他有害物质。

But the agency says it won't contain any harmful substances and it will most likely fall into the ocean.

但该机构表示，它不会含有任何有害物质，很可能会落入海洋。

The liver is also a key organ for dealing with harmful substances.

肝脏也是处理有害物质的关键器官。

This means the liver will not be able to remove harmful substances from our body, or make sure our blood is healthy.

肝脏无法将有害物质排除体外，或保证血液健康。

And this is a very harmful substance. And these are very harmful emissions. There's no doubt.

这是一种非常有害的物质。这些都是非常有害的排放物。毫无疑问。

Minimizing exposure to harmful substances and ensuring safe working conditions are important for maintaining good health.

尽量减少接触有害物质并确保安全的工作条件对于保持身体健康非常重要。

Leukocytes are mainly responsible for protecting the body from bacteria and other potential harmful foreign substances.

白细胞主要负责保护身体免受细菌和其他潜在的有害外来物质的危害。

This means making the personal choice to eat healthy foods, exercise regularly, and avoid harmful substances such as tobacco and alcohol.

这意味着要做出个人选择，吃健康的食物、定期锻炼并避免吸烟和饮酒等有害物质。

This is a small example to show the world that we still can do business and then we still produce the minimum harmful substance for the environment.

这是一个向世界所展示的小例子，我们仍然可以继续做生意，我们仍然生产着对环境产生最小影响的有害物质。

A White House fact sheet put out in support of the new measures says criminals could " drop explosive payloads, deliver harmful substances and conduct reconnaissance" using quadcopters.

白宫发布了一份支持新措施的简报，称犯罪分子可能用四轴无人机“投掷炸弹，运送有害物质或开展侦察工作”。

There are many ways for drugs and food to be contaminated, including a manufacturer's mistake or problems with how the product is stored, or someone could even add a harmful substance.

药品和食品遭受污染的途径众多，包括制造商出纰漏、物品储存方式不当或人为地添加有害物质等。

Healthy habits, such as balanced nutrition, regular exercise, and avoiding harmful substances, can significantly reduce the risk of developing chronic diseases like heart disease, diabetes, and certain types of cancer.

健康的习惯，如均衡的营养、定期运动和避免有害物质，可以显着降低患心脏病、糖尿病和某些类型癌症等慢性疾病的风险。

Antibodies are a class of proteins called immunoglobulins. When an antibody hooks up with an antigen, it often puts the antigen out of action by inactivating or covering a key portion of the harmful substance.

在某些情况下，通过调理作用的过程，抗体在抗原表面涂抹上一些" 奶油" ，让吞噬细胞更喜欢吞噬它们。

146.All of us should be grateful to what nature offers us, obey the natural laws, maintain the balance of nature and ban burning any harmful l substance and giving off carbon dioxide through the chimneys.

我们应当用感激的心回报答自然的恩赐，遵守大自然的规律，维护生态平衡，禁止燃烧任何有害物质，严禁烟囱里释放二氧化碳。